The irony of course is that the current version of Mac OS X, despite superficial appearances, is essentially NeXTstep, which _always_ had two mouse buttons (there was an interface option to allow one to enable the second button as a pop-up menu which pretty much everyone did).

The irony of course is that the current version of Mac OS X, despite superficial appearances, is essentially NeXTstep, which _always_ had two mouse buttons (there was an interface option to allow one to enable the second button as a pop-up menu which pretty much everyone did).